You can get them from Wipe Out Enterprises, Wide Open, Black Widow or Diesel Innovations. Orrrrrr you can send one of them to smith brothers and have them make them for you for $11 each. That is where half the names above get them made.
Oh yah, loose the SCT and get some real tunes....
Smith-Brothers Pushrods
Smith Brothers Pushrods
HEAT TREATED 4130 CHROMOLY FOR EXTREME SPRING PRESSURES
NH38B NA HT 3/8 X .083 BALL/CUP & BALL 10.99